Title :
Power-Efficient Cross-Correlation Beat Detection in Electrocardiogram Analysis Using Bitstreams
Author :
Liseth, O.E. ; Mo, D. ; Hjortland, H.A. ; Lande, T.S. ; Wisland, D.T.
Author_Institution :
Dept. of Inf., Univ. of Oslo, Oslo, Norway
Abstract :
In this paper, we present a novel cross-correlator chip suitable for “smart” ECG electrodes. Sophisticated QRS-detection is feasible exploring multicomponent-based cross-correlation and by exploiting the simplicity offered by bitstream processing. The chip is evaluated using real ECG signals as an example application. Power-efficient running cross correlation is obtained with novel asynchronous circuit solutions consuming approximately 730 μ W while processing ECG data sampled at a rate of 250 Hz. The implemented generic cross-correlator may be explored for other pattern-matching applications in wireless sensor networks or other low-power applications.
Keywords :
biomedical electrodes; body sensor networks; electrocardiography; low-power electronics; medical signal detection; microprocessor chips; QRS-detection; asynchronous circuit; bitstream processing; cross-correlator chip; electrocardiogram analysis; low-power applications; multicomponent-based cross-correlation; pattern-matching applications; power-efficient cross-correlation beat detection; real ECG signals; smart ECG electrode; wireless sensor networks; Biomedical computing; CMOS technology; Correlation; Electrocardiography; Sigma delta modulation; Biomedical computing; bitstream operations; complementary metal–oxide semiconductor (CMOS); cross-correlation; sigma-delta modulation;
Journal_Title :
Biomedical Circuits and Systems, IEEE Transactions on
DOI :
10.1109/TBCAS.2010.2079933
